<p>County detectives are investigating a suspicious house fire in which an Etowah woman discovered her trailer's door ablaze late Saturday.</p><p>Firefighters arrived at 48 Cornflower Drive around 11:10 p.m. to find the singlewide trailer's “door and doorframe on fire,” said Assistant Fire Marshal Joe Swain. </p><p>The home's occupant had thrown water on the fiery door and firefighters were able to quickly extinguish the remaining flames.</p><p>“She said she was in bed and didn't know anything was going on until she heard the smoke alarm going off,” Swain said. </p><p>Investigators sent three charred samples collected at the scene to a lab for testing. They suspect some sort of accelerant was used to ignite the door.</p><p>Capt. Frank Stout of the Henderson County Sheriff's Office said the woman blamed a neighbor for torching her door, but added that detectives haven't determined the fire's cause.</p><p>“There was a suspicious fire of suspicious origin,” Stout said. “As far as developing a suspect, we're still investigating. We're trying to see if it's neighbors, is it kinfolk? We don't know yet.”</p><p>The woman's front door still had a metal face on it, Swain said, but was “pretty much destroyed. It'll have to be replaced.”</p><p>Fire departments that responded were Etowah-Horse Shoe Fire Department, Mountain Home Fire Department, Mills River Fire Department and Valley Hill Fire Department.</p>